Ответ учителя по предмету Математика
1) 3 * 4 = 12(см) — друга сторона прямоугольника
2) 2(3 + 12) = 30 (см) — периметр прямоугольника
3) 30 : 3 = 10(см)
Ответ: 10см — сторона равностороннего треугольника.
1) 3 * 4 = 12(см) — друга сторона прямоугольника
2) 2(3 + 12) = 30 (см) — периметр прямоугольника
3) 30 : 3 = 10(см)
Ответ: 10см — сторона равностороннего треугольника.
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